Saved Bookmarks
| 1. |
COW De Beung: 6. An umbrella is made by stitching 10 triangular pieces of cloth of two different colours each piece measuring 20 cm, 50 cm and 50 cm. How much cloth of eachcolour is required for the umbrella? |
|
Answer» Light or visible light is electromagnetic radiation within the PORTION of the electromagnetic SPECTRUM that can be PERCEIVED by the human EYE. Visible light is usually defined as having WAVELENGTHS in the range of 400–700 nm, or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared and the ultraviole |
|